During these days in Vienna, the news of Carlo's engagement to the Archduchess Sophie has spread throughout Europe.
The marriage between the King of Spain and the Princess of the Austro-Hungarian Empire is absolutely a powerful alliance, potentially altering the dynamics of the Mediterranean situation.
For this reason, the countries paying attention to this marriage are more than just a few, even King Louis I of Portugal personally sent a congratulatory telegram.
Speaking of Louis I, he is actually Carlo's brother-in-law. Carlo's sister, Maria Pia, is his Queen, and the two have two children, and their married life was fairly loving in the past.
However, as Maria Pia discovered King Luis's innumerable lovers, their marital relationship worsened.
